Reamer.



C. C. UPHAM.

REAMER.

APPLIOATION FILED Dnc. zo, 1911.

Patented Dec.24,1912.

CHARLES CHANDLER UPHAM, 0F DETROIT, MICHIGAN.

BEAMER.

Specification of Letters Patent.

Application filed December 20, 1911.

Patented Dec. 24,1912.

Serial No. 667,007.

To all whom it may concern:

Be it known that I, CHARLES CHANDLER UPHAn, a citizen of the United States, residing at Detroit, in lthe county of Vayne and State of Michigan, have invented certain new and useful Improvements in Realm ers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to reamers and more particularly to means adapted for use in combination with a reamer whereby the same may be caused to cut a predetermined amount of metal from the stock being operated upon.

Another object of my invention resides in the provision of a plurality of -adjustable collars which are adapted to be arranged upon the reamer and located within the bores of the bearings or other Work being operated upon whereby the eXact amount of metal is cut from the walls of said bores, the adjustment of said collars throwing the reamer to either side of the bore so that it will cut a greater amount of material from the wall thereof on one side than upon the other.

Still another object of the invention is to provide a simple and efficient device of the above character whereby the roaming of the bores of bearings may be accomplished with a minimum amount of manual labor and the bores are reamed with absolute accuracy.

With the above and other objects in view, the invention consists of the novel features of construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- Figure l is a side elevation of a reamer provided with my improvements; Fig. 2 is a section taken on the line 2-2 of Fig. l; and Fig. 3 is a similar view showing thecollar adjusted on the reamer to eccentrically dispose the same in the bore of the bearing.

Referring in detail to the drawing 5 designates a reamer of the ordinary spiral type which may be of any desired diameter and length. This reamer is provided at a plurality of points with the annular eccentric grooves 6 and in these grooves the sectional collars 7 are adapted to be arranged and rigidly clamped upon the body 8 of the reamer. These collars when first applied to the reamer body have their outer peripheries concentrically disposed with relation to the cutting periphery of the reamer. They are then slightly ground down so that the outer faces of the collar sections are disposed slightly below the periphery of the cutting edges of the reamer as clearly shown in Fig. 2. It will thus be seen that the collar sections dilfer slightly in thickness, such difference in the thickness of the collar sections however, being substantially equal to the difference in the depth of the eccentric grooves 6 uponopposite sides of the body of the reamer. The collar sections are adapted to be securely clamped upon the reamer body by means of the screw bolts 9, one of said sections being provided with recesses 10 to receive the heads of said bolts. When the collar sections are arranged upon the reamer as shown in Fig. 2, the same amount of metal is cut from all portions of the wall of the bore in the bearing as the reamer is rotated. In the operation of the reamer the collar sect-ions being clamped thereon by the screws 9 will rotate with the reamer. the periphery of the collar being disposed within the circumferential plane of the cutting edges of the reamer so that it will not contact with the wall of the bore. Now when it is desired to increase the cutting action upon the metal at one ,side of the bore, the collars 7 are adjusted in the grooves G of the reamer as shown in Fig. 3 so that the outer peripheries of the collar sections are eccentrically disposed with relation to the cutting periphery of the reamer, said collar projecting beyond said cutting edge on one side of the reamer. In the operation of the tool, this projecting portion of the collar engages the wall of the bore and forces the cutting edges of the reamer against the wall thereof upon the opposite side so that the cutting action takes place only through a part of the rotary movement of the tool. The projecting portion of the collar binding against the wall of the bore holds the collar sections against rotation with the reamer, said collar sections remaining stationary in the eccentric grooves and preventing the cutting edges of the reamer from contacting with the portion of the wall with which the projecting collar sections are enga ed.

From t e foregoing description it will be seen that by the provision of my improved adjustable collars, the bores of bearings` may be quickly and accurately reamed. It is understood of course that the several co1- lars are adjusted in the same manner and occupy similar positions with relation to the cutting edges of the tool so that the throw of the reamer is the same throughout its entire length. These collars may be applied to any of the ordinary reamers now in usevand are not limited to the specific form illustrated in the drawings except as ren quired by the scope of the claims. They are also susceptible of considerable change in form and proportion within said scope of the claims without departing from the essential feature or sacrificing any of the advantages involved in the present invention.

Having thus described the invention what is claimed is l. The combination with a reamer having a plurality of annular' eccentric grooves in its periphery, of sectional collars arranged in said grooves and adjustable with relation to the circumference of the reamer, and means for rigidly clamping the collar sections together.

2. The combination with a reamer provided with a plurality of annular eccentric grooves in its periphery, of collars arranged in each of said grooves, said collars being of less diameter than the diameter of the reamer, and means for rigidly securing said collars in the grooves of the reamer.

3. The combination with a reamer provided with a plurality of annular eccentric rality of spaced annular eccentric grooves in its periphery intersecting the cutting edges thereof, of collars arranged in said grooves, and means for adjusting said collars whereby portions thereof may be disposed beyond the cutting edges of the reamer and in contact with the work being operated upon whereby the reamer is maintained in eccentric relation to the wall of the work during its progressive cutting action.

In testimony whereof I hereunto aiiiX my signature in the presence of two witnesses.

CHARLES CHANDLER UPHAM.

Witnesses:

FREDK. B. FITZGERALD, FRANK H. SUMNER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, I). C.

. Q dominan 

